cupid_learn

CUPID (Composable Unix Predictable Ideomatic Domain base)

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CONCEPTS

Introduction to CUPID

• What is CUPID?
  • CUPID (Composable Unix Predictable Ideomatic Domain base) is a framework for building Unix-based systems with predictable behavior and composability.
  • It emphasizes ideomatic design principles and domain-specific customization.

Core Concepts of CUPID

• Composable Architecture

  import cupid
  
  # Define reusable components
  class DatabaseComponent(cupid.Component):
      def setup(self):
          print("Setting up database component.")
  
  class WebServerComponent(cupid.Component):
      def setup(self):
          print("Setting up web server component.")
  
  class LoggingComponent(cupid.Component):
      def setup(self):
          print("Setting up logging component.")
  
  # Create a CUPID system
  system = cupid.System()
  
  # Add components to the system
  system.add_component(DatabaseComponent())
  system.add_component(WebServerComponent())
  system.add_component(LoggingComponent())
  
  # Start the system
  system.start()
  

• Unix Philosophy
  • Understanding the principles of Unix design, such as modularity, simplicity, and composability. ```python

    Example: Unix Philosophy

    Using pipes to compose Unix commands

    import subprocess

  output = subprocess.run([“ls”, “-l”], capture_output=True) print(output.stdout.decode()) ```

• Predictable Behavior
  • Ensuring consistent and deterministic behavior of CUPID-based systems under various conditions. ```python

    Example: Predictable Behavior

    Writing unit tests for a CUPID component

    import unittest import cupid

  class TestPredictableBehavior(unittest.TestCase): def test_addition(self): calculator = cupid.Calculator() result = calculator.add(2, 3) self.assertEqual(result, 5)

  if name == ‘main’: unittest.main() ```

• Ideomatic Design
  • Embracing standard practices and conventions in Unix system design for clarity and consistency.

    # Example: Ideomatic Design
    # Following PEP 8 style guide in CUPID code
    def greet(name):
        """
        Greets the user by name.
        """
        print(f"Hello, {name}!")
    
    greet("Alice")
    

• Domain-specific Customization
  • Tailoring CUPID-based systems to specific use cases and domains for optimal performance and flexibility. ```python

    Example: Domain-specific Customization

    Customizing a web server component in a CUPID system

    import cupid

  web_server = cupid.WebServer() web_server.configure(port=8080, ssl=True) web_server.start() ```